Fluid-actuated rotary motor



E. MAINGUET.

FLUID ACTUATED ROTARY MOTOR. APPUCATION FILED APR.11,1919.

1,862,722. m9111611 Dec. 21, 19201 PATENT OFFICE.

EDWARD MAINGUET, F VIASHTNGTON, DISTRICT OF COLUMBIA.

FLUID-ACTUATED ROTARY MOTOR.

Application led April 11,

T 0 all whom t may concern:

Be it known that I, EDWARD MAINGUET, a citizen of the Republic ofFrance, at present residing in TWashington, in the District of Columbia,have invented certain new and useful Improvements in Fluid-ActuatedRotary Motors, of which the following is a specification.

This invention has reference to that class of rotary motors in which therotor is suitably mounted to turn within a casing having at one side anintake opening for the passage of the driving fluid whose impellingforce imparts motion to the rotor and from which casing the source ofiuid energy exhausts, after having effected its purpose.

My invention comprehends the production of an effectively operatingrotary motor, of the class stated, of a compact and inexpensiveconstruction, in which the coperating parts are especially designed foracquiring the iiuid pressure created forces and transmitting the same ina simple, compact and effective manner for driving purposes.

Another object of my invention is to provide, in a motor of thecharacter stated, a simple and inexpensive arrangement of parts,whereby, when operatively assembled, the whole presents a strong anddurable motor. 1

A further object of my invention is embodied in a peculiar and novelconstruction of a rotor that includes an inner or hub ring adapted forbeing iixedly mounted on or to form an integral part of the shaft to bedriven, an outer concentric ring and a series of paddle-shaped pistons,the latter being radially mounted (with respect to the shaft bearing)between the inner and outer rings and having means for being rigidlyheld to constitute, with the inner and outer rings, a unit adapted -forbeing rotated by the impelling fluid, within a casing that envelops thesaid motor, the said casing having a iiuid intake, at one side, throughwhich the propelling power is injected in an elongated manner, wherebyto constantly engage and impel a plurality of the said paddle-shapedpistons, the said casing also having a fluid exhaust in the other sidein close relation tothe intake.

ln its more complete nature, my invention comprehends, in a rotary motormechanism, a simple and effective means for maintaining a substantiallyhermetical lubricant seal between the piston and the walls of theSpecification of Letters Patent.

Patented Dec.'21, 1920.

1919. serial No. 289,286.

annular piston chamber that is formed between the two half sections ofthe casing members.

l/Vith further objects in view, that will hereinafter appear, myinvention consists in the peculiar construction and novel arrangement ofparts to be first explained in detail, specifically pointed out in theappended claims and illustrated in the accompanying drawings, in which.:

Figure 1 is side elevation of my improved rotary motor.

Fig. 2 is a top plan view thereof, parts being shown in horizontalsection, the intake and exhaust conduits being indicated in dottedlines. I

Fig. 3 is a partial crossl section of my motor taken substantially onthe line 3-3 on Fig. 1, and illustrates the manner in which my improvedrotor unit is assembled. Fig. t is a horizontal section thereof taken onthe line 4-1 on Fig. 3.

In carrying out my invention, I construct the body or motor casing oftwo substantially circular half sections 1 and 2, each of which includesa practically semi-cylindrical annular seat 3, the opposite edges 4 ofeach of which merge with annular peripheral channels 5, the reason forwhich will presently appear.

The casing section 1 is integral with a base 6 and both casing sections1 and 2 have the usuai annular flanges 7 for receiving the clamp bolts 8that secure the said casing sections together.

The two casing sections 1 and 2 have the yusual central or hub bearingfor the passage of the driven shaft of which the rotor forms an integralpart or is fixedly attached to and from which the acquired power istransmitted for driving purpcses, in any suitable manner.

'The casing section 1 has a horizontally elongated inlet port 12 and thecasing 2 has an exhaust port 13, the latter being of somewhat lesserarea than the intake port 12.

By reason of arranging the ports 12 and 13, as stated, with the inletport 12 elongated across the piston chamber, a plurality of the pistonswill, at all times, be in line with the said port 12 (see Fig. 1) and inconsequence, fluid entering the port 12 engages a number ef the pistonsand thus provide a fluid intake force on the pistons of such pressurethat the fiuid impact is suiiicient to impart forward motion to therotor.

The rotor, the construction of which constitutes an essential feature ofmy invention, consists of an inner or hub ring 14 that is integral withor keyed onto the shaft 11 to turn therewith, and an outer concentricring 15. Between the inner and outer rings 14 and 15 is mounted a numberof paddleshaped or circular disk pistons 16, each of which is rigidlyconnected with the said outer and inner rings 14 and 15, the said diskbeing of a diameter to snugly fit and travel within the annular orpiston chamber 17 that is formed by the opposing semi-circular annularseats in the two opposing casing sections, when the said sections areassembled, as is clearly shown in Fig. 2, by reference to which it willalso be seen that the inner hub ring 14 travels within an annularchannel 18 formed between the hub portions of the casing sections, whilethe outer ring 15 is guided and travels in the peripheral or outerchannel 5 formed between the outer portions of the casing sections 1 and2, as shown.

For conveniently mounting the several pistons between and onto the innerand outer rings 14 and 15, I construct the said pistons in the mannerbest shown in Figs. 3 and 4 which illustrates the piston as composed oftwo disk members, each of which, at one side, has a half sectiontaperingpintle, the two pintle sections, when the parts are assembled for use,constitute a journal 2O for engaging a corresponding socket bearing 21in the inner ring 14.

Diametrically opposite the side having the journal 20, the disks, thatform the piston, have recesses, which, when the parts are assembled,constitute radial sockets 22.

In assembling the parts, the several pistons are placed on the'innerring 14 by fitting their journals 20 into the socket bearings 21. Theouter ring 15 is then fitted over the pist0n, as assembled on the innerring 14, with their radial apertures 23 in register with the sockets 22in the several pistons.

When thus positioned, the pistons and the outer ring 15 are locked intorigid connection by plug or key pieces 24 that pass down through thering apertures, as indicated by the arrow see Fig. 3, and which showsthe key piece or plug about to enter into the socket 22 of the piston,Fig. 3, by reference to which it will be noticed the key pieces 24 eachhave a central lubricant passage 25 which communicates with thelubricant channels 26-26 formed between the meeting faces of the twodisk sections that constitute the piston and which communicates withannular spaces 27-27 formed in the peripheral meeting faces of the diskthat constitute the piston and with a lubricant inlet passage 28 thatpasses through the tapering journal which engages the bearing in theinner or hub ring and which, in turn,

communicates with a series of annularly disposed key ports 29 thatcommunicate with a main feed port 30 formed in the driven axle or shaft11 and into which extends the injecting end of a lubricant feed pipe 31which connects with a pump 32 adapted for feeding oil under a pressureslightly in eX- cess of the fluid pressure that drives the rotor, aswill presently be more fully explained.

By referring now to Figs. 3 and 4 of the drawings, it will be noticedeach disk, when the parts are assembled for use, has a pair ofoppositely independent spaces 27-27 with which the lubricant passages,in the disk members that constitute the piston, connect.

Each piston is equipped with a pair of independent and oppositelydisposed substantially semi-circular packing rings 33, the outer orperipheral faces of which extend between the disk members thatconstitute the pistons. Y

Each packing ringl member 33 has a flanged head 34 that rides within thespaces 27, the flanges 35 thereof operating to hold the packing rings 33from becoming detached from the piston and each ring section 33 isconstantly forced outwardly by a leaf spring 36 that rests in the spaces27 and against their respective packing shoes or ring sections 33 andwhich is constantly submerged by the lubricant that is forced back ofthe said springs by pump pressure.

Each pair of piston disk sections are held in rigid connections byscrews 37-3.7, as shown.

By connecting the pistons and the rings 14 and 15 in the manner Vshownand described and by making the inner hub ring 14 as an integral part ofthe shaft 11, a compact, easily assembled and rigid rotor unit isprovided, and, since the said roter unit is completely enveloped by thecasing, it produces a rotor of great strength and rigidity and adaptedfor rotating while it is substantially-hermetically sealed by theconstant feeding of the lubricant, under pump pressure, to the parts, asbefore stated.

By providing a casing firmly mounted on' a base, the detail structure iscapable of being supported in a steady manner, while the whole interiorconstitutes a rotor with which the shaft, of whichthe rotor constitutesa fixed part, turns within the said casing.

By laterally extending the inlet, the propelling or motive power fluidis caused to impact against a number of the pistons at the same time. v

The construction just mentioned has been adopted, so the motive powerpressing on a few paddles at a time will force them immediately towardthe exhaust aperture.

From the foregoing description taken in connection with the drawing, thecomplete construction, the manner of operation and the advantages of myinvention will be readily understood by those skilled in the art towhich my said invention relates.

What l claim is:

l. In a rotary motor of the character described, a casing having anannular piston chamber, a rotor, mounted in the casing, that includes adriven shaft, pistons attached to the shaft and projected radiallytherefrom, the said pistons including members that snugly fit and travelwithin the aforesaid annular chamber, the said casing having an intakefor the impelling fluid, at one side, and an exhausting outlet at theother side, and means for establishing a lubricant seal between theopposing faces of the pistons and the casing.

2. ln a rotary motor of the character described, a casing having anannular piston chamber, a rotor, mounted in the casing, that includes adriven shaft, pistons attached to the shaft and projected radiallytherefrom, the said pistons including members that snugly fit and travelwithin the aforesaid Y annular chamber, the said casing having an intakefor the impelling fluid, at one side, and an exhausting outlet at theother side, and means for establishing a lubricant seal between theopposing faces of the pistons and the casing, the said means including alubricant supply pump, a delivery pipe that connects the pump and therotor, the latter having distributing channels that connect with thesupply pipe and deliver the lubricant over the contacting surfacesbetween the rotor and the casing.

3. In a rotary motor of the class described, a casing having an annularpiston chamber formed with inner and outer opposing annular channelways, said casing having a horizontally elongated intake for thepropelling fluid, at one side, and an exhaust outlet at the other side,the said casing also having an axial bearing that communicates with theannular piston chamber through the inner annular channel thereof, pistonb-lades shaped to snugly fit the annular piston chamber, inner and outerrings that fit and travel in the aforesaid inner and outer channels,means for fixedly mounting the piston blades between the said rings, a.driven shaft mounted in the axialbearing in the casing, the inner ringbeing as an integral part of the said shaft, whereby the shaft, therings and the piston blades constitute a rotor, the said piston bladesincluding radially expansible packing shoes, and means for constantlyholding the said shoes to their extended or packing position.

4t. ln a rotary motor of the class described, a casing having an annularpiston chamber formed with inner and outer opposing annular channelways, said casing having a horizontally elongated intake for thepropelling fluid, at one side, and an exhaust outlet at the other side,the said casing also having an axial bearing that communicates with theannular piston chamber through the inner annular channel thereof, pistonblades shaped to snugly fit the annular piston chamber, inner and outerrings that fit and travel in the aforesaid inner and outer channels,means for xedly mounting the piston blades between the said rings, adriven shaft mounted in the axial bearing in the casing, the inner ringbeing as an integral part of the said shaft, whereby the shaft, therings and the piston blades constitute a rotor, the said piston bladesincluding radially expansible packing shoes, and means for constantlyholding the said shoes to their extended or packing position, the saidmeans comprising a pair of oppositely disposed substantially annularperipheral spaces into which the inner faces of the shoes extend, aspring located in each of the said spaces for engaging with the innerfaces of their respective packing shoes.

5. ln a rotary motor of the vclass described, a casing having an annularpiston chamber formed with inner and outer opposing annular channelways, said casing having a horizontally elongated intake for thepropelling fluid, at one side, and an exhaust outlet at the other side,the said casing also having an axial bearing that communicates with theannular piston chamber through the inner annular channel thereof, pistonblades shaped to snugly fit the annular piston chamber, inner and outerrings that fit and travel in the aforesaid inner and outer channels,means for fixedly mounting the piston blades Abetween the said rings, adriven shaft mounted in the axial bearing in the casing, the inner ringbeing as an integral part of the said shaft, whereby the shaft, therings and the piston blades constitute a rotor, the said piston bladesincluding radially expansible packing shoes, and means for constantlyholding the said shoes to their extended or packing position, the saidmeans comprising a pair of oppositely disposed substantially annularperipheral spaces into which the inner faces of the shoes extend, aspring located in each of the said spaces for engaging with the innerfaces of their respective packing shoes, and other means for feeding alubricant, under pressure, through the casing and into the springcontained spaces to discharge against the said springs, whereby to forcethe said lubricant between the contacting faces of the said shoes andother contacting parts of the rotor and the, casing.

`nnnninn MAINGUET.

